Une des erreurs présente dans le log SoftwareDistribution.log :
2017-06-15 01:44:15.173 UTC Error WsusService.9 HmtWebServices.CheckSimpleAuthWebService SimpleAuth WebService WebException:System.Net.WebException:
The request failed with HTTP status 503: Service Unavailable.
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at Microsoft.UpdateServices.Internal.SimpleAuthWebService.SimpleAuth.Ping(Int32 pingLevel)
at Microsoft.UpdateServices.Internal.HealthMonitoring.HmtWebServices.CheckSimpleAuthWebService(EventLoggingType type, HealthEventLogger logger)
at Microsoft.UpdateServices.Internal.HealthMonitoring.HmtWebServices.CheckSimpleAuthWebService(EventLoggingType type, HealthEventLogger logger)
at Microsoft.UpdateServices.Internal.HealthMonitoring.HealthMonitoringTasks.ExecuteSubtask(HealthMonitoringSubtask subtask, EventLoggingType type, HealthEventLogger logger)
at Microsoft.UpdateServices.Internal.HealthMonitoring.HmtWebServices.Execute(EventLoggingType type)
at Microsoft.UpdateServices.Internal.HealthMonitoring.HealthMonitoringTasks.Execute(EventLoggingType type)
at Microsoft.UpdateServices.Internal.HealthMonitoring.HealthMonitoringThreadManager.Execute(Boolean waitIfNecessary, EventLoggingType loggingType)
at Microsoft.UpdateServices.Internal.HealthMonitoring.HealthMonitoringThreadManager.PeriodicTask()
at Microsoft.UpdateServices.Internal.HealthMonitoring.PeriodicTaskExecuter.ThreadStart()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()